Tone Mapping Settings and Environment Settings node

how to add [Tone Mapping Settings and Environment Settings] this node to my scene to use existing HDRI for this?
Edited for Please put your question in the post body and the title - Daz 3D Forums
Post edited by Richard Haseltine on
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You can add these nodes from the "create" menu.
Also, if you start a render it will automatically add them. Then stop the render to adjust.